公开(公告)号：US10914185B2

公开(公告)日：2021-02-09

申请号：US15368227

申请日：2016-12-02

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Michael Robert Bonacum ,  Thomas D. Martyn ,  James R. Noel ,  Robert J. Parks

IPC: F01D11/02 ,  F01D25/26 ,  F01D25/24 ,  F01D9/06 ,  F01D17/12

Abstract: An engine or engine casing having an inner annular case and an outer annular case. The engine casing is formed using an additive manufacturing technique such that the inner annular case and outer annular case is formed surrounding a hollow inner annular cavity. The annular cavity includes a pin bank connecting the inner annular case and outer annular case. The pin bank improves heat transfer between the inner and outer annular case and provide structural support to the inner and outer annular case. By providing fluid flow through the annular cavity, the turbine casing can be cooled and the radius of the casing can be controlled through the regulation of fluid travelling within the annular cavity. By controlling the fluid flow though the annular cavity, the engine case may be cooled to regulate its temperature in a wide variety of operating conditions. Further, the regulation of fluid in the annular cavity allows for active clearance control of the spacing between the turbine blades or vanes and seals used in the turbine.